My engine ran ok before I replaced the carb, regulator, starter coil and key switch and guages. The engine turns over I get gas but but not even a hint of firing. I checked all wires and they are in the correct order. I tried to ground the generator to the regulator,maybe I need to clean contacts? I pulled # 1 plug and attached plug wire only get a weak spark when I ground the plug. I still have spare coils,regulators and carb. I have a 1948 B1B orginal 6 volt system with generator. Any help would be appriciated. Allan